S
M
T
W
T
F
S
30
78°
53°
31
79°
55°
1
64°
60°
2
69°
61°
3
77°
60°
4
80°
58°
5
73°
54°
6
71°
49°
7
77°
47°
8
75°
49°
9
71°
53°
10
81°
57°
11
72°
48°
12
75°
44°
13
70°
59°
14
69°
45°
15
70°
40°
16
77°
49°
17
74°
59°
18
74°
50°
19
61°
42°
20
53°
41°
21
63°
44°
22
65°
39°
23
66°
37°
24
68°
41°
25
66°
51°
26
63°
51°
27
64°
51°
28
67°
47°
29
69°
45°
30
73°
47°
1
70°
46°
2
71°
40°
3
61°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in West Windsor
West Windsor's September 2026 forecast shows daily high temperatures ranging from 61° to 73°, with overnight lows between 37° and 51°. The average high for September is 67° with an average low of 45°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in West Windsor. See also: October | November | December.
